.front-end-box {
    padding: 20px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.category-header {
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 1px solid #f0f0f0;
}

.category-header h3 {
    margin: 0 0 8px;
    font-size: 18px;
    font-weight: 500;
    color: #1f1f1f;
}

.category-header p {
    margin: 0 0 16px;
    font-size: 14px;
    color: #666;
}

.ant-list-item {
    padding: 16px;
    border-radius: 4px;
    transition: all 0.3s;
}

.ant-list-item:hover {
    background: #f5f5f5;
}

.ant-list-item-meta-title {
    margin-bottom: 4px;
    font-size: 16px;
    font-weight: 500;
}

.ant-list-item-meta-description {
    color: #666;
    font-size: 14px;
}

.practice-footer {
    margin-top: 24px;
    padding-top: 16px;
    border-top: 1px solid #f0f0f0;
    text-align: right;
}

.practice-footer .ant-btn {
    min-width: 120px;
}

@media (max-width: 768px) {
    .front-end-box {
        padding: 16px;
    }

    .category-header {
        margin-bottom: 16px;
    }

    .ant-list-item {
        padding: 12px;
    }

    .ant-list-item-meta-title {
        font-size: 14px;
    }

    .ant-list-item-meta-description {
        font-size: 12px;
    }
}